Pith Number

pith:56FJNHYR

pith:1993:56FJNHYRX4PBW2TCLUF4GTKVRX

not attested not anchored not stored refs pending

Differential Calculus on Iso_q (N), Quantum Poincare' Algebra and q - Gravity

Leonardo Castellani

arxiv:hep-th/9312179 v2 · 1993-12-22 · hep-th · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{56FJNHYRX4PBW2TCLUF4GTKVRX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:17:35.513391Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef8a969f11bf1e1b6a625d0bc34d558dcb8e74f45ad4e018211195aac02a7957

Aliases

arxiv: hep-th/9312179 · arxiv_version: hep-th/9312179v2 · doi: 10.48550/arxiv.hep-th/9312179 · pith_short_12: 56FJNHYRX4PB · pith_short_16: 56FJNHYRX4PBW2TC · pith_short_8: 56FJNHYR

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/56FJNHYRX4PBW2TCLUF4GTKVRX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: ef8a969f11bf1e1b6a625d0bc34d558dcb8e74f45ad4e018211195aac02a7957

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fadcdfa166040a1e57228bac602cff20188f8573a2dd36d3a3faa80ae8918826",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1993-12-22T19:13:01Z",
    "title_canon_sha256": "503c1b7caab5c98b550f7a5c8a9fbb7d81619b6dfc8d0597628527d3b58c9bec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9312179",
    "kind": "arxiv",
    "version": 2
  }
}